Here are some pictures.
So, at first, i see 2 options https://tof.cx/image/9Yh2U
Option 1, Turn 1, i move to the south of the trap, and the drudge doesn't move.
Turn 2, i move to the west, or i pass, and the drudge comes to east of the trap, and then i can pull him to the trap, but it's already turn 3, cannot deal with the level under 6 turns.
Option 2, Turn 1, i move to the west of the trap, and the drudge doesn't move. The archer prepares its bow.
Turn 2, i must move because of the archer, so i go south of the trap. The drudge comes to the north of the trap, and i can pull him to the trap, but it's too late to deal with the level under 6 turns.